Verified - ntpd ignores the year part of refclock timestamps

Hal Murray hmurray at megapathdsl.net
Thu Aug 31 00:35:38 UTC 2017


>> How many of the NMEA devices have GPS rollover problems?
>> (either now or soon)

> It's impossible to tell.  When a device will roll over is, because of the
> pivot-date trick, not a function of its hardware type but of its firmware
> release. --  

Are there any known examples?

I have a collection of NMEA toys.  I don't remember seeing GPS rollover on 
any of them.  Some of them are quite old, but I don't think any have reached 
20 years yet.

We could test fixup software by setting the system clock ahead far enough to 
look like GPS had rolled over.


-- 
These are my opinions.  I hate spam.





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